1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
6 
7 #ifndef mozilla_dom_AnimationPropertySegment_h
8 #define mozilla_dom_AnimationPropertySegment_h
9 
10 #include "mozilla/ComputedTimingFunction.h"
11 #include "mozilla/Maybe.h"
12 #include "mozilla/StyleAnimationValue.h"           // For AnimationValue
13 #include "mozilla/dom/BaseKeyframeTypesBinding.h"  // For CompositeOperation
14 
15 namespace mozilla {
16 
17 struct AnimationPropertySegment {
18   float mFromKey, mToKey;
19   // NOTE: In the case that no keyframe for 0 or 1 offset is specified
20   // the unit of mFromValue or mToValue is eUnit_Null.
21   AnimationValue mFromValue, mToValue;
22 
23   Maybe<ComputedTimingFunction> mTimingFunction;
24   dom::CompositeOperation mFromComposite = dom::CompositeOperation::Replace;
25   dom::CompositeOperation mToComposite = dom::CompositeOperation::Replace;
26 
HasReplaceableValuesAnimationPropertySegment27   bool HasReplaceableValues() const {
28     return HasReplaceableFromValue() && HasReplaceableToValue();
29   }
30 
HasReplaceableFromValueAnimationPropertySegment31   bool HasReplaceableFromValue() const {
32     return !mFromValue.IsNull() &&
33            mFromComposite == dom::CompositeOperation::Replace;
34   }
35 
HasReplaceableToValueAnimationPropertySegment36   bool HasReplaceableToValue() const {
37     return !mToValue.IsNull() &&
38            mToComposite == dom::CompositeOperation::Replace;
39   }
40 
41   bool operator==(const AnimationPropertySegment& aOther) const {
42     return mFromKey == aOther.mFromKey && mToKey == aOther.mToKey &&
43            mFromValue == aOther.mFromValue && mToValue == aOther.mToValue &&
44            mTimingFunction == aOther.mTimingFunction &&
45            mFromComposite == aOther.mFromComposite &&
46            mToComposite == aOther.mToComposite;
47   }
48   bool operator!=(const AnimationPropertySegment& aOther) const {
49     return !(*this == aOther);
50   }
51 };
52 
53 }  // namespace mozilla
54 
55 #endif  // mozilla_dom_AnimationPropertySegment_h
56